1.3.4.3.2.9. Wildcard search *

If you only know subparts of a string of numbers, characters or combined numbers and characters, you can use the wildcard search. The searched part may occur at any place.

Example:

With

*A89*

is found, for example, 1SF A89 7102R7000.

  • If the unknown places do occur at the beginning, at the end or in the middle, doesn't matter. Also the number of used placeholders is arbitrary.[19]

    1SF*7102R7000

    1SFA8*102R*000

  • In V11, single positions could be replaced by the placeholder (?). This placeholder also works in V12, however, much more easier and flexible is the placeholder (*), as it may stand for no, one or multiple characters.

    1SFA8?
    ?102R?000

  • If the unknown part is delimited by spaces, separators such as periods or characters of a different type (numeric/alphanumeric), the placeholder is not required.

  • Alphanumeric search:

    By default, terms are fragmented in meaningful minor terms (substrings according to dictionaries).

    With table you can also find table top without using the placeholder *.

    However, you cannot find what you are looking for with Tisc. In this case, you must use the wildcard search and search with Tisc *.

  • Numerical search:

    123 * 567 *

  • A wildcard search does not use Stemming[20] is executed. * chraube only finds schraube and not schrauben. If you want to find both, you must specify *chraube*.

  • A wildcard search is always associated with a certain loss of performance, but it depends on how many hits there are. For example, a search for s* is significantly slower than a search for *screw. If a search for s* is carried out across a large number of catalogs, it can happen that the PARTapplicationServer aborts the search because it would cost too much performance. In this case, an error message such as: Placeholder search too general. [Wildcard search too general. Narrow down the search by specifying additional letters or numbers.] Restrict the search further by entering additional letters or numbers. [Wildcard search too general. Narrow down the search by specifying additional letters or numbers.]




[19] In V11 the placeholder (*) was only allowed either at the beginning or at the end of a search string.

[20] Stem form reduction, normal form reduction of languages, e.g. singular and plural